Optical waveguides – Planar optical waveguide
Reexamination Certificate
2006-10-03
2006-10-03
Connelly-Cushwa, Michelle (Department: 2883)
Optical waveguides
Planar optical waveguide
C385S131000, C385S130000
Reexamination Certificate
active
07116880
ABSTRACT:
First and second ridge type photonic waveguides are provided. Each of the waveguides includes a core layer and a reflective cladding layer in continuous contact with a first side of a core layer. The core layer has a core index of the refraction and is formed in a ridge in a dimension and shape to impose lateral confinement. The reflective cladding layer has an index of refraction that is substantially different than the core index of refraction. An inter-waveguide slab portion is provided between the first and second waveguides. A substrate supports the first and second waveguides, the slab portion, and the reflective cladding layer. A light interceptor region is provided to hinder a transfer of photons between the first and second waveguides through the inter-waveguides slab portion. The light interceptor region may include a trench region, which is an air gap in one embodiment.
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German Kristine A.
Gulvin Peter M.
Liu Xueyuan
Wang Yao Rong
Connelly-Cushwa Michelle
Miele Law Group PC
Wong Eric
Xerox Corporation
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